44168480557 has 2 divisors, whose sum is σ = 44168480558. Its totient is φ = 44168480556.

The previous prime is 44168480519. The next prime is 44168480563. The reversal of 44168480557 is 75508486144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31401966436 + 12766514121 = 177206^2 + 112989^2 .

It is a cyclic number.

It is not a de Polignac number, because 44168480557 - 2²³ = 44160091949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44168480507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22084240278 + 22084240279.

It is an arithmetic number, because the mean of its divisors is an integer number (22084240279).

Almost surely, 2^44168480557 is an apocalyptic number.

It is an amenable number.

44168480557 is a deficient number, since it is larger than the sum of its proper divisors (1).

44168480557 is an equidigital number, since it uses as much as digits as its factorization.

44168480557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4300800, while the sum is 52.

The spelling of 44168480557 in words is "forty-four billion, one hundred sixty-eight million, four hundred eighty thousand, five hundred fifty-seven".